Fermi's Golden Rule
Fermi's Golden Rule is a principle in quantum mechanics that describes how particles transition from one state to another due to interactions, like being influenced by a force or field. It calculates the probability of these transitions occurring over time, typically focusing on a system moving from an initial energy state to a final one. This rule highlights the relationship between the number of available final states and the strength of the interaction, providing insight into various processes, such as radioactive decay and absorption of light by atoms. Essentially, it helps explain how and why certain changes happen at the quantum level.
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Fermi's Golden Rule is a principle in quantum mechanics that describes how likely a quantum system is to transition from one state to another over time. It essentially gives a formula to calculate the probability of this transition happening, based on factors like the energy difference between states and the density of possible final states. In practical terms, it helps us understand processes like radioactive decay and the behavior of particles in collisions, providing insight into how systems change and evolve at the microscopic level.